I had a problem where the SSRS date parameter displayed date and time, in this format (eg 3/11/2010 10:22:07) where i wanted to have the parameter to  display date only in this format(eg 3/11/2010).

I embedding the report to an asp.net webform using report viewer control.

Found a fix of the issue , and can be found on my Stack overflaw page please follow the link below,  don’t forget to leave a comment here, if you found this useful.